Hydraulic control device for an automatic transmission

Details Hydraulic control device for an automatic transmission Hydraulic control device for an automatic transmission

1990-09-12

1992-03-03

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74868, 74606R, 192109F, F16H 6100, F16H 5702

Patent

active

050922017

ABSTRACT:
A check valve and an orifice are situated in a feeder oil passage to an accumulator so that influence of drained oil from the accumulator is eliminated when a hydraulic servo is drained. The hydraulic pressure is supplied to the servo through the orifice, and to the accumulator with the feeder oil passage separate from the oil passage to the hydraulic servo with the check valve being opened. When draining, the hydraulic pressure in the hydraulic servo is drained quickly, however, the hydraulic pressure in the accumulator is drained gradually because the check valve is closed.

REFERENCES:
patent: 3951011 (1976-04-01), Lemon
patent: 4499789 (1985-02-01), Kuramochi et al.
patent: 4628774 (1986-12-01), Iwanaga
patent: 4727774 (1988-03-01), Sumiya et al.
patent: 4748809 (1988-06-01), Sumiya et al.
patent: 4823637 (1989-04-01), Taguchi et al.
patent: 4930080 (1990-05-01), Suzuki
patent: 5033331 (1991-07-01), Takada et al.

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